Abstract
SummaryThe effects of variations in type of load, percentage volume barrel loading and effective current density on cathode current efficiency, barrel efficiency and distribution of metal on components in the load have been studied. A small horizontal barrel was employed, the plating solution being of the Watts nickel type. The main information revealed by multiple regression analysis, making use of computer techniques, was as follows, (i) Cathode current efficiency had a relationship with only one independent variable (percentage volume loading) and even then only in the case of one type of load (discs), (ii) Barrel efficiency increased as percentage volume loading was increased but was not affected significantly by variation in current density, (iii) Standard deviation of coating weights decreased as the percentage volume loading was increased but it increased as the current density was increased.
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